How Much Force Can You Use To Break The Needle During An Epidural Puncture

During an actual epidural puncture, the epidural needle is subjected to a series of forces. The amount of force depends on the procedure (multiple punctures with the same needle), the firmness of the ligament, the presence of bone connections and the patient's subconscious movement, and the maximum force applied by the operator.

During the experiment, the researchers mainly applied long-axis forces directly to the bone model, which may be different from the forces applied in clinical practice.

Epidural needle rupture is extremely rare and difficult to simulate. In theory, breakage can occur if the epidural needle bends in the patient's body and then refolds back into its original shape or if the needle has been damaged before epidural surgery.

In general, anesthesiologists should prevent bending of the epidural needle, which can have serious consequences for the patient. When the needle direction needs to be changed, the needle should be withdrawn to the superficial subcutaneous tissue for re-puncture. In addition, care should be taken to check the needle for damage or bending when force is required for epidural anesthesia.

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